That's a neat application for this. Don't use it as a live data store, but as a (much) better way to embed and access static assets and default data, maybe even embed the default schema for a new installation where it copies the data to a normal writable file on first run.

Many binaries are signed, and just having data appended to them arbitrarily would break signatures. But if it's only used for static data anyways that wouldn't be a problem.